Role-first choices
The useful comparison today is between the jobs your factory needs: better water handling, better production, a cleaner melting/selling loop, or a later collection session.
A practical map of upgrade priorities without made-up named item tiers.
Use these notes while you play, then follow the related pages for codes, rankings, tools, or route-specific help. Upgrade value comes from the next visible improvement, not an invented named-item tier.
The useful comparison today is between the jobs your factory needs: better water handling, better production, a cleaner melting/selling loop, or a later collection session.
Wiki pages should point players toward the practical pages that explain what to claim, compare, build, or check next.